Answer:

Step-by-step explanation:
We know that:


Remember:
450°=360°+60°
and:

Thus:

Then:

Answer: 64 ................ :)
Step-by-step explanation:
Answer:
12 only.
Step-by-step explanation:
When the question is asking for f(0), it is asking for the value of <em>y </em>when x = 0.
We see that there is only 1 intersection at x = 0, and the y value would equal 12.
Therefore, our answer is 12 only.
The value of square root 86 is between 9 and 9.5